Fluorometric determination of ascorbic acid by exploiting its deactivating effect on the oxidase–mimetic properties of cobalt oxyhydroxide nanosheets

Cui, Wanwan; Wang, Yanyan; Yang, Dandan; Du, Jianxiu

doi:10.1007/s00604-017-2525-4

Cited by 37 publications

(16 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, AA deficiency causes scurvy, whereas excessive intake of AA can induce urinary stones, diarrhea, and stomach convulsions. [1][2][3] Importantly, AA cannot be produced in the human body through biosynthesis, but it is only obtained through the intake of food. Therefore, efficient analytical methods for the sensitive and selective detection of AA are highly important for both the pharmaceutical and food industries, as well as for disease diagnosis.…”

Section: Introductionmentioning

confidence: 99%

“…Abnormal levels of AA in the body have been found to be associated with some diseases. For example, AA deficiency causes scurvy, whereas excessive intake of AA can induce urinary stones, diarrhea, and stomach convulsions [1–3] . Importantly, AA cannot be produced in the human body through biosynthesis, but it is only obtained through the intake of food.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

et al. 2021

View full text Add to dashboard Cite

A simple, rapid, and sensitive colorimetric assay for ascorbic acid (AA) was developed based on poly(methacrylic acid)‐stabilized silver nanoclusters (PMAA‐AgNCs). The AgNCs were prepared via a single‐step synthesis exploiting PMAA as both a reducing agent and a stabilizer. The sensing capability of this method is based on the color change associated with the growth in size of AgNCs, which turn into nanoparticles, resulting from the reduction of free Ag+ present in AgNCs solution to Ag0 by AA. In the presence of AA, an apparent surface plasmon resonance absorption peak of the silver nanoparticles was observed at 430 nm, and its intensity increased linearly with AA concentration, so that a solution color change could be observed with the naked eye. The proposed method exhibited a linear working concentration range of 0.25–100 μM and a detection limit of 95 nM. The sensor was employed to determine AA concentration in fruit juice and vitamin C tablet samples, affording results of high accuracy.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Ascorbic acid is vital to the health of many organisms. Numerous effective procedures have been employed to quantify AA such as UV–visible spectroscopy, high‐performance liquid chromatography (HPLC), electrochemistry, colorimetry, enzyme analysis and fluorometric spectroscopy . Based on the comparison between previous procedures, fluorescence appears to be the most favourable option for rapid, non‐invasive analysis with also the benefits of simplicity and high sensitivity, as well as repeatability, reproducibility and low cost …”

Section: Introductionmentioning

confidence: 99%

Sensitive spectrofluorometric method for the determination of ascorbic acid in pharmaceutical nutritional supplements using acriflavine as a fluorescence reagent

et al. 2019

View full text Add to dashboard Cite

An easily performed, specific, sensitive, rapid, reliable and inexpensive procedure for the spectrofluorometric quantitation of ascorbic acid was proposed using acriflavine as a fluorescence quenching reagent. The procedure was based on the determined quenching effect of ascorbic acid on the natural fluorescence signal of acriflavine and the reaction between ascorbic acid and acriflavine in Britton-Robinson buffer solution (pH 6) to produce an ion-associated complex. The reduction in acriflavine fluorescence intensity was detected at 505 nm, while excitation occurred at 265 nm. The relationship between quenching fluorescence intensity (ΔF) and concentration of ascorbic acid was linear (R 2 = 0.9967) within the range 2-10 μg/ml and with a detection limit of 0.08 μg/ml. No significant interference was detected from other materials often found in pharmaceutical nutritional tablets. The obtained results were compared with those from high-performance liquid chromatography and appeared in good agreement, with no important differences in precision or accuracy. The proposed spectrofluorimetric method was used to determine the amount of ascorbic acid in a number of commercial pharmaceutical nutritional supplement tablets with a 95% confidence performance.

show abstract

“…1D, which has an absorption around 420 nm. 22 The inserted image indicated that the CoOOH nanosheets solution has a good dispersibility and possess the Tyndall effect of the colloidal solution. The FTIR spectrum of CoOOH nanosheets (Fig.…”

Section: Preparation and Characterization Of Coooh Nanosheetsmentioning

confidence: 99%

“…In recent years, cobalt oxyhydroxide (CoOOH) nanosheets are known by its rich electrical and catalytic properties, 20 22 Yao's group proposed a novel label-free uorescent sensing system to detect alkaline phosphatase (ALP) which can catalyze L-ascorbic acid-2-phosphate into AA based on chemical redox strategy to modulate the uorescence of nitrogen-doped graphene quantum dots (NGQDs). 23 It is worthy to note that all these are turn-on uo-rescence probes.…”

mentioning

confidence: 99%

Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H₂O₂ system

Cai

Nie

et al. 2018

RSC Adv.

View full text Add to dashboard Cite

Ascorbic acid (AA) as an essential vitamin in the human body participates in various physiological reactions and plays a key role in many biochemical processes. Therefore, it is of vital importance to monitor and quantify AA in commercial tablets, beverages and food. In this work, a rapid and ultrasensitive chemiluminescence (CL) system for the detection of AA was developed, in which ultrathin cobalt oxyhydroxide (CoOOH) nanosheets were applied in the conventional luminol-H 2 O 2 CL system. The results showed that ultrathin CoOOH nanosheets as a catalyzer remarkably improved the CL intensity of the CoOOH-luminol-H 2 O 2 system, up to about 1400-fold. Under the optimized conditions, the CL inhibition efficiencies increase linearly with the concentrations of AA in the range of 1-500 pmol L À1, and the limit of detection was 39 fmol L À1. Moreover, the proposed CL system was successfully applied in the determination of AA in medicinal tablets with satisfactory results.

show abstract

Fluorometric determination of ascorbic acid by exploiting its deactivating effect on the oxidase–mimetic properties of cobalt oxyhydroxide nanosheets

Cited by 37 publications

References 31 publications

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

Sensitive spectrofluorometric method for the determination of ascorbic acid in pharmaceutical nutritional supplements using acriflavine as a fluorescence reagent

Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H₂O₂ system

Contact Info

Product

Resources

About

Fluorometric determination of ascorbic acid by exploiting its deactivating effect on the oxidase–mimetic properties of cobalt oxyhydroxide nanosheets

Cited by 37 publications

References 31 publications

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

Poly(methacrylic acid)‐Stabilized Silver Nanoclusters as Colorimetric Sensors for the Rapid and Sensitive Detection of Ascorbic Acid

Sensitive spectrofluorometric method for the determination of ascorbic acid in pharmaceutical nutritional supplements using acriflavine as a fluorescence reagent

Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H2O2 system

Contact Info

Product

Resources

About

Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H₂O₂ system